#!usr/bin/node

const stdin = process.stdin,
      stdout = process.stdout;

//stdin.pipe(stdout);

for(let c='a'.charCodeAt(0);c<='z'.charCodeAt(0);c++) {
  stdout.write(String.fromCharCode(c));
}

stdin.push("jijie\n");
stdin.push("hello");
stdin.on('data',(data)=>{
  stdout.write(data.toString('utf-8').toUpperCase());
});

stdin.on('end',()=>{
  process.exit();
});
